A discussion of the generation of the best estimate trajectory (BET) of the first Space Shuttle Orbiter entry flight is presented. The BET defines a time history of the state, attitude, and atmospheric relative parameters throughout the Shuttle entry from an altitude of approximately 183 km to rollout. The inertial parameters were estimated utilizing a weighted least squares batch filter algorithm. Spacecraft angular rate and acceleration data derived from the Inertial Measurement Unit were utilized to predict the state and attitude which was constrained in a weighted least squares process to fit external tracking data consisting of ground based S-band and C-band data. Refined spacecraft altitude and velocity during and post rollout were obtained by processing artificial altimeter and Doppler data. The BET generation process is discussed. Software and data interface discussions are included. The variables and coordinate systems utilized are defined. STS-1 mission peculiar inputs are summarized. A listing of the contents of the actual BET is provided.


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    Title :

    Reconstruction of the 1st Space Shuttle (STS-1) entry trajectory


    Contributors:
    Findlay, J. T. (author) / Kelly, G. M. (author) / Heck, M. L. (author)

    Publication date :

    1982-06-01


    Type of media :

    Report


    Type of material :

    No indication


    Language :

    English


    Keywords :


    Shuttle /STS-1/ entry trajectory reconstruction

    COMPTON, H. / FINDLAY, J. / KELLY, G. et al. | AIAA | 1981


    Shuttle /STS-1/ entry trajectory reconstruction

    Compton, H. R. / Findlay, J. T. / Kelly, G. M. et al. | NTRS | 1981



    Allowable Trajectory Variations for Space Shuttle Orbiter Entry-Aeroheating CFD

    Wood, W. / Alter, S. / Palmer, G. et al. | British Library Conference Proceedings | 2008


    Allowable Trajectory Variations for Space Shuttle Orbiter Entry-Aeroheating CFD

    Wood, William A. / Alter, Stephen J. / Palmer, Grant E. et al. | NTRS | 2008